Compare 1549 vs 1557
| Property | 1549 | 1557 |
|---|---|---|
| Type | prime | composite number |
| Unique factors | 1 | 2 |
| Total factors | 1 | 3 |
| Prime factorization | 15491 | 32 × 1731 |
| Prime factorization | 1549 | 3 × 3 × 173 |
| Divisors count | 2 | 6 |
| Divisors | 1, 1549 | 1, 3, 9, 173, 519, 1557 |
| Number of properties | 7 | 0 |
| Additive primes | 133rd | |
| Cousin primes (1st member) | 54th | |
| Isolated primes | 145th | |
| Long primes | 93rd | |
| Primes | 244th | |
| Pythagorean primes | 117th | |
| Sexy primes (2nd member) | 106th | |
| Roman numberals | MDXLIX | MDLVII |
| Base 2 | 110000011012 | 110000101012 |
| Base 3 | 20101013 | 20102003 |
| Base 4 | 1200314 | 1201114 |
| Base 5 | 221445 | 222125 |
| Base 6 | 111016 | 111136 |
| Base 7 | 43427 | 43537 |
| Base 8 | 30158 | 30258 |
| Base 9 | 21119 | 21209 |
| Base 10 | 154910 | 155710 |
| Base 11 | 118911 | 119611 |
| Base 12 | a9112 | a9912 |
| Base 13 | 92213 | 92a13 |
| Base 14 | 7c914 | 7d314 |
| Base 15 | 6d415 | 6dc15 |
| Base 16 | 60d16 | 61516 |